import { TemplateResult } from 'lit';
import { BahtElement } from '../base.js';
/** Where the dialog panel sits. */
export type ModalPlacement = 'center' | 'sheet' | 'side';
/**
 * Modal dialog (20baht: 0.4 ink scrim, no blur; float shadow; 20px radius).
 * Controlled: the host flips `open`. Children become the body.
 *
 *   <baht-modal heading="Delete this workflow?">
 *     <p>Steps and run history will be removed.</p>
 *   </baht-modal>
 *   modal.open = true;
 *   modal.addEventListener('baht-close', (e) => (modal.open = false));
 *
 * `placement` moves the panel: `'center'` (default) is the dialog above;
 * `'sheet'` docks it to the bottom as a bottom sheet below 600px viewport
 * width (full width, rounded top corners, a grab handle, max 90dvh with the
 * body scrolling, slides up) and is a centered dialog from 600px up; `'side'`
 * is a full-height drawer at the inline end, `min(420px, 100vw)` wide, sliding
 * in from that edge. Scrim, focus trap/restore and `baht-close` are the same in
 * every placement. Modifier classes: `.baht-modal--sheet` / `.baht-modal--side`
 * on the panel, `.baht-modal-scrim--sheet` / `.baht-modal-scrim--side` on the scrim.
 */
export declare class BahtModal extends BahtElement {
    open: boolean;
    heading: string;
    /** One muted line under the heading; also becomes the dialog's aria-describedby. */
    description: string;
    showClose: boolean;
    /** `'center'` (default) dialog, `'sheet'` bottom sheet below 600px (centered
     * from 600px up), or `'side'` full-height drawer at the inline end. */
    placement: ModalPlacement;
    /**
     * Scrim click requests close. Off by default: a stray click outside the panel
     * must not throw away what the user typed — close via ×, Escape or your buttons.
     */
    closeOnScrim: boolean;
    private bodyEl;
    private get titleId();
    private get descriptionId();
    private closing;
    private closeToken;
    private previousFocus;
    private onKeydown;
    private focusables;
    /** Keep Tab cycling inside the dialog (no keyboard escape to the page behind). */
    private trapFocus;
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected firstUpdated(): void;
    protected willUpdate(changed: Map<PropertyKey, unknown>): void;
    protected updated(changed: Map<PropertyKey, unknown>): void;
    /** Ask the host to close (the host owns `open`). */
    requestClose(reason?: 'escape' | 'scrim' | 'button'): void;
    protected render(): TemplateResult;
}